How to do tract segmentation from the mrtrix's .tck files.

[mainak-biswas1999]

I used dtiIInit to convert the dwi file and t1 file data to dt6 required for segmentation using AFQ_SegmentFiberGroups. The wholebrainFG file that is a parameter of the function (tracts the neural fibres) is computed using dt6. However, I want to use the precomputed .tck files from Mrtrix to perform tract segmentation and visualization. I am not able to find a suitable way. Some expert advice would be useful.

[ZCGZ-7]

Firstly, when you perform fiber tracking using command "tckgen", you can add an option "-output" in that finally you will get a txt file containing specific info about fiber. There is also a command named "tckconvert" in MRtrix3, it can help you split the fiber into different txt files which record the seed points direction infomation. At last, you can load these files in matlab and save them in dt. But these txt files may be very large because they highly depend on the number of fibers.